A portable nebulizer (10,30) includes a nebulizer body (11,11') including a nozzle hole (111,351) and an atomizer plate (113) positioned in the nozzle hole (111,351), and a dust shield (13,13',31) coupled to the nebulizer body (11,11') and movable relative to the nebulizer body (11,11') between a dust protection position where the dust shield (13,13',31) shields the nozzle hole (111,351) of the nebulizer body (11,11') and an open position where the dust shield (13,13',31) is kept away from the nozzle hole (111,351) of the nebulizer body (11,11'), thus, the dust shield (13,13',31) is capable of protecting the nozzle hole (111,351) of the portable nebulizer (10,30) against environmental contamination.本創作的可攜式噴霧器包括一本體及一防塵裝置。本體具有一噴霧口及位在噴霧口內的內的一霧化片。防塵裝置連接本體，且可相對本體被移動至一防塵位置及一開放位置。防塵位置是防塵裝置罩住本體的霧化口。開放位置是防塵裝置沒有罩住本體的霧化口。防塵裝置可以避免可攜式噴霧器的噴霧口被環境中的灰塵所污染。
